Medium-high frequency induction heating motor shell sleeving equipment

Abstract

The utility model discloses sleeving equipment for a medium-high frequency induction heating motor shell, which comprises a working table, a medium-high frequency induction circuit is arranged in the working table, a heating sleeve is arranged on the working table, an iron core is arranged in the heating sleeve, the heating sleeve and the iron core are fixed on the working table through bolts, and an induction coil is sleeved on the periphery of the iron core. The two ends of the induction coil are connected with an electric bar which is connected with a load of the medium-high frequency induction circuit. The utility model has the following technical effects: induction heating is adopted, the iron core is subjected to induction heating by the induction coil, the heated iron core transmits heat to the heating sleeve, and the motor shell is sleeved on the heating sleeve for heating, so that the heating is uniform and the equivalent expansion is realized, and the quality of the interference sleeving of the motor shell and the spindle is improved; and secondly, deformation and damage of the motor shell cannot be caused, and the coil is cooled by adopting a water supply mode, so that the coil is prevented from being burnt out in the heating process.

Description

Technical Field

[0001] This utility model relates to an induction heating device for motor housing assembly. Background Technology

[0002] There are generally two types of motor housings: cast aluminum housings and drawn aluminum housings. The inner diameter of the aluminum housing and the outer diameter of the ingot are interference-fitted. Therefore, the aluminum housing needs to be heated and expanded during assembly to fit the ingot with the interference fit. Currently, flame heating is used, with a blowtorch used to heat the aluminum housing around its perimeter. However, due to uneven heating or excessively high local temperatures, firstly, the aluminum housing cannot be heated evenly and expanded in equal amounts, affecting the assembly quality; secondly, the aluminum housing is prone to deformation, causing damage. Utility Model Content

[0003] The purpose of this invention is to provide a device that uses a medium-to-high frequency induction heating method to heat the motor housing.

[0004] The technical solution of this utility model is: a medium- and high-frequency induction heating motor housing assembly device, including a workbench, a medium- and high-frequency induction circuit installed in the workbench, a heating sleeve installed in the workbench, an iron core in the heating sleeve, the heating sleeve and the iron core being fixed to the workbench by bolts, an induction coil being sleeved around the outer circumference of the iron core, and electric busbars connected to both ends of the induction coil, the electric busbars being connected to the load of the medium- and high-frequency induction circuit.

[0005] The induction coil is made of copper tubing and has an inlet and an outlet water interface. The inlet pipe of the water pump is connected to the circulating cooling water tank, the outlet pipe of the water pump is connected to the inlet water interface of the induction coil, and the inlet pipe of the circulating cooling water tank is connected to the outlet water interface of the induction coil.

[0006] This utility model has the following technical effects: It adopts induction heating, induction coil induction heating the iron core, and the heated iron core conducts heat to the heating jacket. The motor shell is placed on the heating jacket for heating. First, the heating is uniform and the expansion is equal, which improves the quality of the interference fit between the motor shell and the spindle. Second, it will not cause deformation or damage to the motor shell. The coil is cooled by water circulation to avoid burning out the coil during the heating process. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of this utility model.

[0008] Figure 2 This is a schematic diagram of the structure of an induction coil.

[0009] Figure 3 This is a diagram of a medium-to-high frequency induction circuit. Detailed Implementation

[0010] like Figure 1 , Figure 2As shown, a medium- and high-frequency induction heating motor housing assembly device includes a workbench 1, a medium- and high-frequency induction circuit 7 installed in the workbench 1, a heating sleeve 2 installed in the workbench 1, an iron core 4 in the heating sleeve 2, the heating sleeve 2 and the iron core 4 are fixed to the workbench 1 by bolts 5, an induction coil 3 is sleeved on the outer periphery of the iron core 4, and electric busbars 6 are connected to both ends of the induction coil 3. The electric busbars 6 are connected to the load of the medium- and high-frequency induction circuit 7.

[0011] The induction coil 3 is made of copper tubing. It is equipped with a water inlet 3-1 and a water outlet 3-2. The water inlet pipe of the water pump 8 is connected to the circulating cooling water tank 9, the water outlet pipe of the water pump 8 is connected to the water inlet 3-1 on the induction coil 3, and the water inlet pipe of the circulating cooling water tank 9 is connected to the water outlet 3-2 on the induction coil 3.

[0012] like Figure 3 As shown, the medium-high frequency induction heating circuit includes: a three-phase rectifier bridge, an IGBT inverter driver, an IGBT half-bridge inverter, a mainboard PLC, a touch screen, and a switching power supply; the three-phase power supplies A, B, and C are connected to the A, B, and C terminals of the three-phase rectifier bridge, which is connected to the IGBT half-bridge inverter. A pre-charging resistor R1, a charging relay coil J, a filter circuit, and a RC snubber circuit are connected between the three-phase rectifier bridge and the IGBT half-bridge inverter. The filter circuit consists of a parallel filter capacitor C1 and a discharge resistor R2. The RC snubber circuit includes capacitors C2 and C3 connected in series, and resistors R3 and R4 connected in series. Capacitors C2 and C3 are connected in parallel with the series resistors R3 and R4, and capacitors C2 and C3 are connected to resistors R3 and R4. The IGBT half-bridge inverter is connected to the induction coil L2; charging... The Kc1 and Kc2 terminals of relay coil J are connected to the Kc1 / Kc2 pins of the main board PLC. The filter circuit is connected to the input voltage detection pin of the main board PLC. The IGBT inverter drive is connected to the inverter drive pins of the IGBT half-bridge inverter and the main board PLC respectively. The touch screen is connected to the Rs485 pin of the main board PLC. The switching power supply is connected to the DC24V pin of the main board PLC. An input current sampling coil L1 is connected to the three-phase power supply and is connected to the input current detection pin of the main board PLC. The three-phase power supply A, B, and C are connected to the A, B, and C three-phase detection pins of the main board PLC. An output current sampling coil L3 is connected to the connection terminal between the IGBT half-bridge inverter and the induction coil L2 and is connected to the output current detection pin of the main board PLC. Start, stop, and detection buttons are connected to the signal input pins of the main board PLC.

Claims

1. A medium- and high-frequency induction heating motor housing assembly device, comprising a workbench (1), wherein a medium- and high-frequency induction circuit (7) is installed in the workbench (1), characterized in that: A heating jacket (2) is installed on the workbench (1). There is an iron core (4) in the heating jacket (2). The heating jacket (2) and the iron core (4) are fixed on the workbench (1) by bolts (5). The induction coil (3) is sleeved on the outer periphery of the iron core (4). The two ends of the induction coil (3) are connected to the busbar (6). The busbar (6) is connected to the load of the medium-high frequency induction circuit (7).

2. The medium-high frequency induction heating motor housing assembly device according to claim 1, characterized in that: The induction coil (3) is made of copper tubing. It is equipped with a water inlet (3-1) and a water outlet (3-2). The water inlet pipe of the water pump (8) is connected to the circulating cooling water tank (9). The water outlet pipe of the water pump (8) is connected to the water inlet (3-1) on the induction coil (3). The water inlet pipe of the circulating cooling water tank (9) is connected to the water outlet (3-2) of the induction coil (3).

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